adding jpanel into a jframe. netbeans

Question

i am particularly using netbeans gui editor and i am new to gui

i have a jframe created and I added jtabbedpanel.

inside the jtabbedpanel i have 2 panels that i call standard and compact

i have set standardPanel = new ImagePanel(); which ImagePanel.java is located on different java file

how am I suppose to put a panel on different file for reusability ?

i obviously dont want all the codes in a single file.

is this the right way to design a gui ?

thanks

Answer 1

You should create your own class, something like "CustomPanel" that extends from JPanel. You put that class in its own file, and everything that goes on the JPanel should be a part of that class.

Then, instead of adding a JPanel to the tabbed panel, you create an instance of CustomPanel and add it to the tabbed panel.

Answer 2

thanks.now it is partly working

so i hv MainWindow extends Jframe has following private javax.swing.JPanel standardPanel = new ImagePanel(); ImagePanel is defined in other file, of course.

the problem before is that the imagePanel() does not display anything

the sample code that i got has overriden the paint method so it allow something to display. at least at this point i know a jframe can call jpanel & jpanel handles "its own" display

now the problem is where i should define my data model as there are many jpanels in my jframe and they all share the same model. i wonder if this is the right way of creating gui. i am new.

too many words to reply the comment so i put it as answer. sorry.